For a perfect finish of the day, the astounding Annie Lennox – whose voice, like good whiskey, seems to only get better with time and never fails to intoxicate – delivered a performance both paralyzingly beautiful and crowd-rousing. And getting 700 brainiacs on their feet, singing and clapping to the beat of iconic music, is no small feat. Sweet dreams are made of this, indeed.

Maria Popova is the editor of Brain Pickings, a curated inventory of miscellaneous interestingness. She writes for Wired UK, Big Think and Huffington Post, and spends a shameful amount of time on Twitter.